CVE-2022-20623
published 2022-02-23CVE-2022-20623: A vulnerability in the rate limiter for Bidirectional Forwarding Detection (BFD) traffic of Cisco NX-OS Software for Cisco Nexus 9000 Series Switches could…
high7.5CVSS 3.1
AVNACLPRNUINSUCNINAH
A vulnerability in the rate limiter for Bidirectional Forwarding Detection (BFD) traffic of Cisco NX-OS Software for Cisco Nexus 9000 Series Switches could allow an unauthenticated, remote attacker to cause BFD traffic to be dropped on an affected device. This vulnerability is due to a logic error in the BFD rate limiter functionality. An attacker could exploit this vulnerability by sending a crafted stream of traffic through the device. A successful exploit could allow the attacker to cause BFD traffic to be dropped, resulting in BFD session flaps. BFD session flaps can cause route instability and dropped traffic, resulting in a denial of service (DoS) condition. This vulnerability applies to both IPv4 and IPv6 traffic.
Affected
5 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_nx-os_software | — | — |
| cisco | nexus_9000_series_switches_bidirectional_forwarding_detection | — | — |
| cisco | nx-os | 10.1\(1\) – 10.2\(1\) | — |
| cisco | nx-os | 7.0\(3\)i6\(2\) – 7.0\(3\)i7\(3\) | — |
| cisco | nx-os | 7.0\(3\)i6\(2\) – 9.3\(8\) | — |